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PostgreSQL 入门学习教程，从入门到精通，PostgreSQL 16 (Windows) 安装与核心语法实战指南(2）
欢迎来到本博客❤️❤️博主优势博客内容尽量做到思维缜密逻辑清晰为了方便读者。
⛳️座右铭行百里者半于九十。
本文内容如下⛳️赠与读者做科研涉及到一个深在的思想系统需要科研者逻辑缜密踏实认真但是不能只是努力很多时候借力比努力更重要然后还要有仰望星空的创新点和启发点。
建议读者按目录次序逐一浏览免得骤然跌入幽暗的迷宫找不到来时的路它不足为你揭示全部问题的答案但若能解答你胸中升起的一朵朵疑云也未尝不会酿成晚霞斑斓的别一番景致万一它给你带来了一场精神世界的苦雨那就借机洗刷一下原来存放在那儿的“躺平”上的尘埃吧。
或许雨过云收神驰的天地更清朗.......
分——内容介绍“The players job is to help his team win.” - Cliff Blau, baseball historian and statistician“The player’s job is to make money for the owner.” – all sports team ownersFans tend to focus on the players on the field or court, but that is only the tip of the sportsbusiness iceberg. Sports are entertainment first and foremost. Entertainment is a profitgenerating business and the players are hired mostly for that purpose. Often, fans of spectatorsports ignore the financial purpose of a sport and try to focus on the game itself and itsparticipants. However, in professional sports business, the primary goal is to make money for theowner and not necessarily win games. While these two goals may be related, since winninggenerates more interest in the team, other factors are involved. And for some sports teams, thereare crucial moments when opportunity and risk are both high – like this year’s situation for teamsin the Women’s National Basketball Association (WNBA), the most prominent women’sprofessional basketball league in the United States. For many reasons (especially higher faninterest), WNBA teams are hoping to evolve from risky startup businesses into majorentertainment enterprises by taking advantage of increased media attention, new team franchises,larger venues, and a new digital platform to increase revenue. The owners in that league need touse sports analytics to succeed on the court but also use financial modeling to achieve significantfinancial gain in the bottom line of their business’s profit sheet.Should players (and other employees of the team business) in a sport get paid more for theirperformance that produces wins or for their contributions in turning a profit for the team owner?Sometimes, a player’s sport performance is directly related to profit, but not always. Someplayers may attract fans based more on popularity than performance. These players may generateticket, parking, concession, and jersey revenue much more than players with higher levels ofperformance. Financial and sports analytics models need to connect to create good team decisionmaking.In the emerging field of sports analytics with various kinds and amounts of performance data,there continue to be challenges to build statistics that quantify the value of player talents andperformances (what statistic to measure, how to measure it, when to measure it). Some playersare injured more frequently than others. How does that affect player value? Some havepersonalities that lead to more popularity and appeal that lead to financial gain. Context andtiming matter in the sense that some players, even those with average performance, comethrough at important moments of the game or critical times in the season. There is a temporalelement that must consider the measure of future potential of a player/employee on achieving thegoal of the team. Some roles may be performance or skill-based and other roles are accomplishedmore by hard work and perseverance.The player or team perceptions, popularity, timing, and marketing can play major roles, inaddition to the location of the team. Teams in large markets often have different sports situationsand goals than small-market teams. Those differences impact how owners achieve profit andrecruit their players and employees. Can modeling help an owner establish methodologies forsetting offers, negotiating, and writing contracts?There are many team issues that are strictly or mostly financial, just as there are issues that aremostly sports. In many cases, professional sports teams are franchises that are part of the leagueenterprise and often operate with additional rules and constraints set by leagues or governmentson their player salaries and contracts. These are intended to make the game competition fair withsome reasonable amount ofcompetitive balance. Some professional sports have systems thatregulate salaries with caps or taxes. Every season, the owner must decide how much to financewith debt versus equity and whether risks in the form of seeking better team performance withassociated additional costs are worth taking. In the sports business world, conditions such asrevenues, salaries, injuries, trade opportunities, taxes, fees, and interest rates change over time.Sports teams are now seen as premium assets, with values in many sports soaring far beyondhistorical norms due to financial and market factors such as lucrative media deals andaccumulation of vast data streams and intellectual property.As a modeling group for a sports team, your ICM team can use publicly available sport andfinance data for a team of your choice (the team you select must consist of at least 5 players thatplay cooperatively at the same time and be a member of a professional league) and build abusiness and management model for the team for the coming or next season.As was mentioned earlier as an example of how this modeling work can be extremely valuable,the WNBA is undergoing significant financial changes -- record viewership, rising franchisevalues, and significant player benefit expectations. Currently, negotiations and demands over therevenue-sharing agreement between teams and players are sticking points. During this comingseason, team owners have an opportunity to remake and improve their business or succumb torisks that may cause them to sell or take on substantial debt. These issues create a situation wheresolid financial and sport modeling can make a big difference for the current and future owners ofthese teams. You may use a WNBA team if you care to, but you are not required to do that.Questions to consider:Design a dynamic decision-making model that would help your team owner and generalmanagers adjust their leverage in response to changing team performance and economicconditions. The goal is to maximize team profit and value while managing team structure andperformance. The model should include priorities and actions for the management teams in bothbusiness operations and team operations, and account for systems that will help the owner makedecisions through the coming season and beyond.Based on the needs of the team and your model, develop a strategy to acquire players for nextseason using the standard practice for your team’s league such as adraft, free agency, trades,transfer fees, or other standard practices. You may want to consider how to value a player or theThere are many league-determined rulings that impact how a single team can operate, such assalary caps, number of players on a roster, schedule (number, order, location, and date of gamesin a season, so consequently days of rest), media contracts and rights, revenue distributions, andothers. If a league is expanding the number of franchises (such as for WNBA), it is likely toimpact all teams in the league. Use your model to decide how your team’s strategy shouldchange from your initial strategy during a season with league expansion. How does the locationfor the new team impact your model and resulting strategy? Be clear on the impact on the teamowners and locations for the new team that would be particularly harmful or beneficial under anexpansion.Consider one additional business decision and use your model to design the best strategy foryour team. Some examples include but are not limited to:• Ticket sales vary greatly by the size of the stadium, time of year, popularity of the team(yours and opponent), size of the team’s market, and other factors. A team may choose tomaximize ticket sale revenue for each game or lower the prices to have larger attendancewith the possibility to convert some of those attendees into season ticket holders. Howdo you determine the optimal ticket pricing strategy over a season?• The venue for the team to play its games may be rented or owned with the need tomaintain, renovate, or even build a new venue. How do you balance the long-term costof the venue when it is a short-term decision?• Player equity in ownership can be one strategy for subsidizing large salaries, such asrevenue sharing (single season), profit participation (bonus), decision makers (as part ofunions or collective bargaining), long-term equity stake (part owner), or other methods.Player equity options need to be sufficiently lucrative for a player to accept it, but notundermine the future funding options. How do you determine which players, if any, areoffered equity and how much?• Media deals are a large source of revenue, fan engagement, and brand building, oftenproducing high engagement and advertising potential. While leagues usually contractnational deals, teams can sometimes broker their own local deals or streaming options.Does your team need to improve or change its media presence?• Division or conference structure, which can build or take advantage of rivalries whererival teams play more often, is generally determined by the league. Are there ways thatleague structures and schedules be reconfigured to increase profit for your team?• Determine your own issue that applies to your team or sport and use your model to helpdecide the issue to improve team performance or owner profit.“球员的职责是帮助球队赢得⽐赛。
——克⾥夫·布劳棒球历史学家和统计学家 “球员的⼯作就是为⽼板赚钱。
——所有体育队⽼板球迷往往关注场上球员的表现但这只是体育商业冰⼭⼀⻆。
体育⾸先是⼀种娱乐活动。
娱乐是⼀种盈利性产业球员的雇佣也主要是为了这个⽬的。
通常观看体育⽐赛的球迷会忽略这项运动的经济⽬的⽽专注于⽐赛本⾝和参赛者。
然⽽在职业体育商业中⾸要⽬标是为球队⽼板赚钱⽽⾮赢得⽐赛。
虽然这两个⽬标可能相关——毕竟胜利能提升球队的关注度——但其中还涉及其他因素。
对于某些运动队来说有时会⾯临机遇与⻛险并存的关键时刻——例如今年美国最知名的⼥⼦职业篮球联赛——美国⼥⼦国家篮球协会WNBA的球队所处的境地。
由于诸多原因尤其是球迷兴趣⽇益浓厚WNBA 各队希望通过利⽤媒体关注度的提⾼、新球队特许经营权、更⼤的场馆和新的数字平台来增加收⼊从⽽从⾼⻛险的初创企业发展成为⼤型娱乐企业。
该联盟的⽼板们需要利⽤体育分析来在球场上取得成功同时也需要利⽤财务建模来提⾼企业利润表的最终收益。
在体育运动中球员以及球队其他员⼯的 薪酬应该取决于他们为球队赢得⽐赛的表现还是取决于他们为球队盈利所做的贡献有时球员的竞技表现与盈利直接相关但并⾮总是如此。
有些球员吸引球迷更多是凭借⼈⽓⽽⾮球技。
这些球员带来的⻔票、停⻋、特许经营和球⾐收⼊可能远⾼于那些竞技⽔平更⾼的球员。
财务和体育分析模型需要相互结合才能帮助球队做出明智的决策。
在体育分析这⼀新兴领域⾯对种类繁多、数量庞⼤的表现数据如何构建能够量化球员天赋和表现价值的统计模型仍然⾯临诸多挑战例如衡量哪些统计数据、如何衡量以及何时衡量。
有些球员⽐其他球员更容易受伤这会对球员价值产⽣怎样的影响有些球员拥有独特的个性魅⼒更容易获得⼈⽓和吸引⼒从⽽带来经济收益。
时机和背景⾄关重要因为有些球员即使表现平平也能在⽐赛的关键时刻或赛季的关键时期挺⾝⽽出。
衡量球员/员⼯未来实现团队⽬标的潜⼒时必须考虑时间因素。
有些⻆⾊可能更注重表现或技能⽽另⼀些⻆⾊则更多地依赖于勤奋和毅⼒。
除了球队所在地之外球员或球队的知名度、⼈⽓、时机和市场营销也会发挥重要作⽤。
⼤市场球队与⼩市场球队的竞技状况和⽬标往往有所不同。
这些差异会影响球队⽼板如何盈利以及如何招募球员和员⼯。
建模能否帮助球队⽼板建⽴⼀套制定报价、谈判和撰写合同的⽅法很多球队问题纯粹或主要涉及财务正如有些问题主要涉及体育竞技⼀样。
在很多情况下职业体育队是联盟旗下的特许经营球队其球员薪资和合同通常受到联盟或政府制定的额外规则和限制。
这些规则和限制旨在确保⽐赛公平公正并有⼀定的合理性。
竞争平衡⼀些职业体育联盟设有⼯资帽或税收制度来规范球员薪资。
每个赛季球队⽼板都必须决定以债务融资还是股权融资以及为了提升球队成绩⽽承担的额外成本是否值得。
在体育商业领域收⼊、薪资、伤病、交易机会、税收、费⽤和利率等因素都会随着时间推移⽽变化。
如今体育团队被视为优质资产由于利润丰厚的媒体交易、庞⼤的数据流和知识产权的积累等⾦融和市场因素许多体育项⽬的价值远远超过了历史正常⽔平。
作为⼀⽀运动队的建模⼩组您的 ICM 团队可以使⽤公开的体育和财务数据选择⼀⽀您喜欢的球队您选择的球队必须⾄少由 5 名球员组成他们同时合作⽐赛并且是职业联赛的成员并为该球队构建⼀个即将到来的或下个赛季的商业和管理模型。
正如前⽂所述WNBA正经历着重⼤的财务变⾰——收视率屡创新⾼、球队价值飙升以及球员对更⾼福利的预期这正体现了此类建模⼯作的巨⼤价值。
⽬前球队和球员之间关于收⼊分成协议的谈判和诉求是症结所在。
在新赛季球队⽼板有机会重塑并改善他们的商业模式或者屈服于可能导致他们出售球队或背负巨额债务的⻛险。
这些问题使得稳健的财务和体育建模能够对这些球队的现任和未来⽼板产⽣重⼤影响。
您可以选择使⽤WNBA球队作为模型但这并⾮强制要求。
需要考虑的问题设计⼀个动态决策模型帮助球队⽼板和总经理根据球队表现和经济状况的变化调整策略。
⽬标是在管理球队结构和绩效的同时最⼤化球队利润和价值。
该模型应包含业务运营和球队运营中管理团队的优先事项和⾏动⽅案并涵盖能够帮助⽼板在接下来的赛季及以后做出决策的系统。
根据球队需求和你的模型制定⼀个下赛季球员引进策略并采⽤球队所在联赛的标准做法例如选秀⾃由球员交易、转会费或其他常规做法。
您可能需要考虑如何评估⼀名球员或球员的价值。
从团队所有者的利润⻆度分析团队动态。
利⽤你的模型结果讨论你的策略对业务的优势和劣势。
联盟制定的诸多规则会影响单⽀球队的运营例如⼯资帽、球队名单上的球员⼈数、赛程安排赛季中⽐赛的数量、顺序、地点和⽇期以及相应的休息⽇、媒体合同和版权、收⼊分配等等。
如果联盟扩充球队数量例如WNBA则很可能会影响联盟中的所有球队。
请运⽤你的模型在联盟扩充的赛季中你的球队策略应该如何调整新球队的所在地会如何影响你的模型和最终策略请明确指出扩充对球队⽼板和新球队所在地可能产⽣哪些特别不利或有利的影响。
考虑以下⼀项额外的业务决策并运⽤你的模型为你的团队设计最佳策略。
例如但不限于· ⻔票销售情况受体育场规模、季节和球队受欢迎程度等因素影响很⼤。
你和对⼿的市场规模以及其他因素都会影响票价。
球队可以选择最⼤化每场⽐赛的⻔票收⼊也可以降低票价以吸引更多观众并有可能将部分观众转化为季票持有者。
那么如何确定⼀个赛季的最佳票价策略呢· 球队⽐赛场地可能是租⽤的也可能是⾃有的都需要维护、翻新甚⾄新建场地。
如何在短期决策中权衡场地的⻓期成本· 球员股权可以作为⼀种补贴⾼额薪资的策略例如收⼊分成单赛季、利润分成奖⾦、决策权作为⼯会或集体谈判的⼀部分、⻓期股权部分所有者或其他⽅式。
球员股权选项必须⾜够诱⼈才能吸引球员接受但⼜不能损害未来的融资选择。
那么如何决定是否向球员提供股权以及提供多少股权呢· 媒体合作是重要的收⼊来源能够提升球迷参与度和品牌建设通常具有很⾼的互动率和⼴告潜⼒。
虽然联盟通常会签订全国性协议但球队有时也可以⾃⾏洽谈本地协议或流媒体播放⽅案。
您的球队是否需要改进或改变其媒体形象· 分区或联盟的结构通常由联盟决定这种结构可以促进或利⽤宿敌关系使敌对球队之间有更多交锋机会。
是否存在重新调整联盟结构和赛程的⽅法以提⾼贵队的盈利· 确定适⽤于您的团队或运动的问题并使⽤您的模型来帮助解决该问题以提⾼团队表现或所有者利润。
分——运行结果通过网盘分享的文件【2026_MCM美赛资源】思路、代码、论文.rar链接:https://pan.baidu.com/s/1lsXsMGLvQMFc9ev3m7qXgg?pwd3h97提取码: 3h97--来自百度网盘超级会员v7的分享
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(文章内容仅供参考具体效果以运行结果为准)